How To Fix RSOBI_MF158 - DataSource &1 has no key fields; refer to long text for more information

RSOBI_MF158 - Overview

• Message type: E = Error

• Message class: RSOBI_MF - Messages for SOBI Model Factory

• Message number: 158

• Message text: DataSource &1 has no key fields; refer to long text for more information

What causes this issue?

The DataSource &V1& involves a DataSource attribute. The attributes and
compounding information for a characteristic are derived using the key
fields of a DataSource.
The DataSource &V1& does not have any key fields.

System Response

The individual fields of the DataSource &V1& are mapped to the
InfoObjects. Since the DataSource &V1& does not have any key fields, it
is not possible to derive any attributes and/or compounding information.
Furthermore, it is not possible to determine a "leading" characteristic.
As such, you cannot generate any transformations or a data transfer pr
ocess.

How to fix this error?

You have the following options:
You can execute the key information for the DataSource &V1& at a later
time/date. You can then restart the model generation. The objects that
could not be generated before are now created.
The lack of key fields in DataSource &V1& is deliberate. In this case,
you can ignore this warning.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

RSOBI_MF158 - Details

• The SAP error message RSOBI_MF158 indicates that a DataSource does not have any key fields defined. This can occur when you are trying to replicate or use a DataSource in SAP BW (Business Warehouse) or SAP HANA, and the system requires key fields to uniquely identify records.
  
  Cause:
  
  No Key Fields Defined: The DataSource you are trying to use does not have any fields marked as key fields. Key fields are essential for identifying unique records in a dataset.
  Incorrect Configuration: The DataSource may not have been configured correctly during its creation or modification.
  DataSource Type: Some types of DataSources may not inherently have key fields, depending on the source system and the data model.
  
  
  Solution:
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in the SAP system (transaction code RSA1 for Data Warehousing Workbench).
  Navigate to the DataSource and check its field definitions.
  Ensure that at least one field is marked as a key field. You can do this